| Acronym | Meaning |
| BWRAF | Buoyancy |
| SWP | Safe Working Pressure |
| DL | Dive Leader (BSAC) |
| LP | Low Pressure |
| IAND | International Association Of Nitrox Divers |
| IOC | Instructor Orientation Course (PADI) |
| ITW | Instructor Training Workshop (BSAC) |
| AOW | Advanced Open Water |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| PADI | Professional Association Of Diving Instructors |